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参数资料
| 型号： | MAX11080EVKIT+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 20/29页 |
| 文件大小： | 0K |
| 描述： | KIT FAULT MONITOR 12CH HV |
| 其它有关文件： | Automotive Product Guide |
| 标准包装： | 1 |
| 主要目的： | 电源管理，电池监控器 |
| 已用 IC / 零件： | MAX11080 |
| 主要属性： | 故障监视器，过压或欠压指示 |
| 次要属性： | 可选电压范围 |
| 已供物品： | 板 |
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12-Channel, High-Voltage
Battery-Pack Fault Monitors
CP+
S1B
150 I
1k I
SHDN
DEVICE
(n)
5.6V
100nF
5.6V
68nF
200k I
DEVICE
(n+1)
GND U
Figure 17. Shutdown Circuit Interface
and then VDD U . If SHDN < 0.6V, the MAX11080/
MAX11081 shut down.
Figure 17 shows the shutdown circuit interface of two
daisy-chain devices.
When SHDN is high for device n, the charge pump is
ALRM U
AGND
enabled and begins to charge the capacitors in the
interface circuit. When the voltage of the SHDN pin for
device (n+1) rises above the VIH threshold, that device
begins its power-up sequence. This action propagates
up the daisy-chain until the last battery module is
VAA
SHDN
5 BIT UP
FULL FLAG
D
CLK
Q
FMEA FLAG
INTERNAL ALARM
SIGNAL
ALRM L
enabled. Conversely, pulling SHDN to AGND powers
down a module and thus propagates the power-down
to all higher daisy-chained modules as the charge on
their SHDN capacitors is dissipated. The zener diodes
provide additional ESD protection. The filter capacitors
COUNTER
RST
PORb
and resistors are sized to provide robust noise immuni-
ty. The diode from the CP+ pin should be S1B or a simi-
lar low-leakage type for high-temperature stability.
The SHDN pin has a weak internal pulldown resistor on
the order of 12M ? . A 200k ? or similar resistor from SHDN
to AGND should be installed to ensure that the SHDN pin
is pulled low when the active SHDN signal is propagated
up the daisy-chain bus. The resistor is not needed for
applications that tie SHDN high at all times. The typical
SHDN rising edge propagation time from one daisy-
chained module to the next is 1.5ms.
For FMEA detectability, the SHDN pin is designed to
detect logic transitions that could be indicative of a
short circuit to the ALRM L pin. The SHDN pin circuit
shown in Figure 18 provides some immunity for rare
glitches at the SHDN pin, such as those during power-
up, that are not a result of a short to ALRM L . The SHDN
pin signal is fed as a clock to a 5-bit counter. When the
counter reaches the maximum count of 32, the full flag
is set and acts as a clock to a D flip-flop. When the D
flip-flop is clocked, its output goes high to signal the
FMEA fault condition and trigger the alarm. In this way,
the device goes into the alarm state only after 32 pulses
Figure 18. Internal FMEA SHDN Pin Functionality Circuit
on the SHDN pin have occurred. To clear the FMEA
fault state, a POR of the device must be activated. The
application circuit should ensure that the SHDN pin is
glitch free and only toggles when a shutdown or power-
down event is intended. This FMEA detection circuit
should not be considered as a provision to filter out
noise or glitches on the SHDN pin.
C1 Input Absolute Maximum Rating
The C1 input is limited to V DCIN - 0.6V above AGND or
a maximum of 20V if the SHDN pin is asserted. If an
application requires that the 20V restriction be removed
during active shutdown, then a 4.0V zener diode can
be added from V AA to AGND. This protects V AA and
allows the C1 input to go to V DCIN - 0.6V regardless of
the SHDN state. It also allows the differential C1 to C0
voltage to range from -0.3V to +80V.
Cell-Connection and Detection
An individual MAX11080/MAX11081 can be connected to
as many as 12 series-connected cells. To accommodate
configurations with fewer cells, unused cell inputs must be
20
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX11080EVKIT+ | 功能描述:电源管理IC开发工具 Programmers, Development Systems Eval and Demo Boards and Kits - KIT FAULT MONITOR 12CH HV RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| MAX11080GUU/V+ | 功能描述:电池管理 12 Ch Hi Volt Batt Pack Fault Monitor RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| MAX11080GUU/V+T | 功能描述:电池管理 12 Ch Hi Volt Batt Pack Fault Monitor RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| MAX11080GUU/V+TG0J | 功能描述:电池管理 12-Channel High-Voltage Battery-Pack Fault Monitors RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| MAX11080GUU+ | 功能描述:电池管理 12 Ch Hi Volt Batt Pack Fault Monitor RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
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